Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 904 [Rate centres in NPA 904] [Dial plan for NPA 904]

NXX: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
904-366 A Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 0 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 1 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 2 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 3 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 4 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 5 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 6 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 7 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 8 Jacksonville FL JCVLFLCLDS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-366 9 Jacksonville FL JCVMFLEDAMD  6502 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 45204   2013-12-09   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.